Wrench.



F. WALDNER.

WRENCH. APPLICATION FILED APR. 22, 1913.

Patented sept.9,1913.

. FREDERICKWALDNER, or ALEXANDRIA, sourir DAKOTA.y

WRENCH.

' Specicaton of Letters Patent.

lPatentedsept,9,1913.

Application filed April 22, 1913.A Serial No. 762,811,

To all whom t may concern: f

Be it known that l, FREDERIGKWVALDNER,

a citizen of the United States, residing at Alexandria, in the county ofHanson and State of South Dakota, have invented a new and useful Wrench;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as willv enable others skilled in theart to which it appertains to make and use the same.

This invention relates to a new and useful wrench. f

As one of the objects of the invention, it is the aim to provide twomembers pivotedl together, and provided with angular portions havingmeans including a right and left threaded screw, for cooperating withthe angular portion whereby the jaws of the wrench may be moved relativeto one an` other.

In practical fields, the details of construction of the improved wrenchmay necessitate alterations, to which therpatentee is entitled, providedthe alterations fall within the scope of what is claimed.

The invention comprises further features and combinations of parts, ashereinafter set forth, shown in the drawings and claimed.

In the drawings z-Figure 1 is a perspective view of the improved wrenchconstructed in accordance with the invention. Fig. 2

`is a view showing parts in elevation and parts in section.

Referring more particularly to the drawings, 1 and 2 designate twomembers pivoted together as at 3. Said members are formed withcorrespondingly shaped angular portions 4 comprising the inclined parts5 and 6, and 7 and 8. Just beyond the inclined parts 5 and 7, themembers 1 and 2 terminate in jaws 9 and 10, the opposing faces of whichare recessed at 11, whereby a nut or the like may be easily gripped.

In order to move the jaws 9 and 10 toward and from one lanother crossheads 12 and 18 are provided, the ends of which are provided withanti-frictional rollers 14, adapted to engage 'the inner inclined facesof the angular portions A of said members, whereby, when the cross headsare movedto separate, the jaws 9 and 10 will be moved apart. To bringthe jaws 9 and 10 together U-shaped straps 15 and 16 arch over the in-4clined parts 5 and 6, 7 and 8, which straps are pivoted upon the pins 17on which the rollers/14 are mounted Springs 18 connecting the saidstraps at 19 laref provided, 4for holdingfthe straps yieldablyjinposition, 'Y

thereby allowing'thel straps to conform readily to Vthezshape ofthe'angular portionl was the cross heads are moved toward orjfrom oneanother, in order to prevent binding, f. the rollers 14 alsoconstituting means toprevent binding.

cross heads apart4 or f toward each other. This screw device comprises aknurled disk 21, from the opposite iatfaces ofy which the pins 22 and 23extend in opposite directionsy v A screw device 1s provided for movingthe and axially or in alinement. The said pins, are provided with rightandleft threads', Y

and are threaded through thecross heads, so that upon moving or rotatingthe-fdisk 21 in either direction they cross heads 'will be VThe movedtoward for from one another'.

threads of the pin 23 are somewhat finer and at a different pitch thanthose of the pin 22, owing to the fact that when the jaws 9 and 10 areseparated, the space between the inclined parts 5 and 7 will be greaterthan the space between the inclined parts 7 and y8. `In' other words,the cross head 12 should be separated or moved from the cross head 13together and provided with correspondingly shaped angular portionscomprising inclined parts, cross heads interposed between andcooperating with said inclined parts, whereby the members may beseparated, U-,shaped straps arching the inclined parts and pivoted tothecross heads to coperate with the inclined parts to bring the memberstogether, a screw device comprising a disk member disposed between thecross heads and provided with oppositely extending right and leftthreaded pins threaded into the cross heads, whereby the cross heads maybe moved toward and from one another, said members immediately beyondthe angular portions terminating in opposing j aws.

2. In combination, two members pivoted together and providedv withcorrespondingly shaped angular portions comprising inclined parts, crossheads interposed between and by the members maybe separated, U-shapedstraps arching the inclinedparts and piv` oted to the cross heads tocoperate with they inclined parts to bring the members together,l akscrew device comprising a disk member disposed .between the cross headsand provided with oppositely extending right and left threaded pinsthreaded into the crossV heads,l wherebyl the cross heads may be movedtoward and fromzone another, said members immediately beyond the angularportions terminating in opposing jaws,

`means for yieldably holding the straps in place', and'. anti-frictionalrollers carried by 15 the cross heads to engage the inclined parts.

In testimony whereof I have signed my presence of FREDERICK WALDNER.

Witnesses:

THIEL, Gmo. THIEL.

Copies of this patent may 'be obtained for' ve cents each, by addressingthe "ommissioner of Patents,

` Y Washington, 1110!. Y v

